Archive for December, 2006
Saturday, December 30th, 2006
Phase, Frequency, Amplitude, and all that.. is an example of a university math course adopting the convention that identifies “phase shift” as angular shift as opposed to horizontal displacement or “time shift”
And at the time of this posting, the Wikipedia article on Phase (waves) takes the same point of view.
Posted in education, mathematics | No Comments »
Saturday, December 30th, 2006
Murray Bourne at squareCircelZ has taken the time to respond to a comment I made on one of his interactive math pages, so I thought I should make an effort to explain my concern in a bit more detail.
In high school and college precalculus courses, the material on graphing trig functions often includes a [...]
Posted in education, mathematics | No Comments »
Saturday, December 30th, 2006
Posted in botany, house&garden | No Comments »
Saturday, December 30th, 2006
Oregon State Univ., LANDSCAPE PLANTS
Posted in botany, house&garden | No Comments »
Wednesday, December 27th, 2006
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IMG_7655,
originally uploaded by alqpr1.
Here is Tom near the end of our first day’s trek. Behind him is the foot of the black glacier.
Posted in photos, travel | No Comments »
Wednesday, December 27th, 2006
This is a test post from , a fancy photo sharing thing.
Posted in photography, photos, web | No Comments »
Monday, December 25th, 2006
Award from national Climate Change Voluntary Challenge and Registry
Article from Office of Energy Efficiency at Natural Resources Canada
Another from OEE
More from OEE
status (gold) record at VCR/GHG Challenge Registry
CS Workshops in partnership with CityGreen
Report by Prism Engineering on Langara Project
Evaluation by Campus Sustainability Assessment Project
Reference to the CityGreen CS course at Coquitlam Environment [...]
Posted in sustainability | No Comments »
Sunday, December 24th, 2006
Carbon Footprint includes a “calculator” for estimating one’s personal contribution of CO2 to the atmosphere and suggests various ways of reducing or offsetting it. But the encouragement to “plant trees” (or pay for same) may be misguided, since it seems clear that it is the lifetime carbon sequestration that is being assigned for each tree [...]
Posted in climate, sustainability | No Comments »
Sunday, December 24th, 2006
RealClimate is a blog about climate science maintained primarily by Gavin Schmidt. It appears to be a forum for active discussion of current issues with input from a wide cross section of those active in the field.
Posted in climate, sustainability | No Comments »
Sunday, December 24th, 2006
This is a balanced complete and well referenced account of the history of our understanding of CO2 in the atmosphere.
Posted in climate, science | No Comments »
Wednesday, December 20th, 2006
This post by Will Thalheimer came to my attention via Harold Jarche and Stephen Downes. Unfortunately it’s not just in education that people are often impressed by fraudeulent mis-citation of derivative bunk.
Posted in education, social issues | No Comments »
Tuesday, December 19th, 2006
Posted in web | No Comments »
Tuesday, December 19th, 2006
This posting by Roger Shank
(found via Stephen Downes) uses widespread ignorance of the quadratic formula by successful people as evidence that mathematics requirements in our schools are excessive.
But I know that in BC it is quite possible to graduate from high school without knowing the quadratic formula. So, unless this jurisdiction is more unusual than [...]
Posted in education, mathematics | No Comments »
Monday, December 11th, 2006
Contrary Brin: Predictions Registries and Markets look like a good idea.
Posted in social issues, technology | No Comments »
Friday, December 1st, 2006
My experience may include something equivalent to what others call god, but whatever it is cannot be put into words - perhaps not at all, and certainly not with the certainty that most religions ascribe to their own very specific creeds and scriptures. Indeed, the conflict and hate that arises between these competing creeds is [...]
Posted in religion | No Comments »
Friday, December 1st, 2006
My main reason for posting about this from David Brin is to see if any qualified comments come back on the feasibility of subductive disposal.
Posted in technology, world | No Comments »
Friday, December 1st, 2006
How Can Smart People Believe in God?
is a blog entry at Stanford’s ‘Philosophy Talk’ about their Oct 22 show with Philip Clayton on ‘Believing in God’.
Commenter David Chilstrom revives the old saw that it takes as much faith to disbelieve than to believe - completely missing the point that not to believe in something is [...]
Posted in religion | 3 Comments »